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Should I use char** argv or char* argv[]?
...ead of drawing an array parameter invalid up-front, a C compiler will transform the type of the respective parameter to be a pointer. Remember this, it's very important. The parameter won't be an array, but instead it will be a pointer to the respective element type.
Now, if you try to pass an arr...
MySQL: how to get the difference between two timestamps in seconds
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+1 for the performance explanation. I wasn't using UNIX_TIMESTAMP() because I thought it would take more time.
– elcool
Apr 22 '11 at 18:14
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JPQL IN clause: Java-Arrays (or Lists, Sets…)?
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How do I convert an integer to string as part of a PostgreSQL query?
...int8
The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax
myint = cast ( mytext as int8)
If you have literal text you want to compare with an int, cast the int to text:
SELECT * FROM table
WHERE myint::varchar(255) = mytext
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How to duplicate sys.stdout to a log file?
...re python implementation of tee (py2/3 compatible) that can run on any platform and also be used in different logging configurations. stackoverflow.com/questions/616645/…
– sorin
Aug 6 '10 at 11:43
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Are there any smart cases of runtime code modification?
...n be useful for:
Some virtual machines use JIT compilation to improve performance.
Generating specialized functions on the fly has long been common in computer graphics. See e.g. Rob Pike and Bart Locanthi and John Reiser Hardware Software Tradeoffs for Bitmap Graphics on the Blit (1984) or this p...
Hidden features of Perl?
... record
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Run perldoc perlop and search for "flip-flop" for more information and examples.
share
answered Oct 2 '08 at 12:41
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Finding the PHP File (at run time) where a Class was Defined
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Changing my CALayer's anchorPoint moves the view
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The Layer Geometry and Transforms section of the Core Animation Programming Guide explains the relationship between a CALayer's position and anchorPoint properties. Basically, the position of a layer is specified in terms of the location of the layer's...
How to print the ld(linker) search path
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I've found on some platforms (e.g. arm with Linaro toolchain) that ldconfig doesn't actually search the same directories as the run time linker. You can get it to output its search path, and include the paths from LD_LIBRARY_PATH by enabling debugg...